I checked a few different resources, and they all say OBD1 code 34 is MAP. I even check ford codes and that comes up as a EGR code. So I'm not sure where MAF is coming from. Sorry we can't provide more information then this. But this is what we have. If you think the problem is with the MAF, you simply need to unplug it. The engine should stumble a bit and then smooth out if the MAF is the problem.

Did a little search/reading. Me and RockAuto'* bad, the 3.3 does not have a MAP. And I found some others looking for it when getting that fault. Where did you get the MAF? Did the code reader fault both of them. Could be a defective one or someone'* return after they get they grimy hands on it? Wiring all OK? Did you check your coil packs like you were going to? A bad one could trip any number of things but should throw a fault of it'* own. Plug/wires all good? You in a limited window of possibilities at least. If eveything looks good even an ECM fault is possible. Dan'* advice of unplugging the MAF and see what happens is a good one. If it runs better without it, it obviously is defective, new or not. If it runs the same, likely something else needs to be looked at.

Oh, by the way, I love Pontiacs. My first one was a '66 GTO. Later on, the wife had a grand am GT and my son had a nice Bonneville. I bet your GXP is awesome!!

I do love it. Unique and smooth enough to forgets some of it faults. Found one reference to getting the same code on the same engine and it turned out to be a vacuum leak that fixed it. Sounds like GM did some software trickery to get around the fact the engine doesn't have what most do. Not saying thats the cause, just throwing it out there. Also have you a noid light to check the injectors? Another item that seemed to cure it for another. But that ones seems a bit out there.

Also found a bad parking/neutral switch in the mix of fixes. ??? Just stating what I find for that fault. I'm a search engine badger that likes to tunnel.....

Thanks, guys, I definitely have some things to check out tomorrow. Will post my solution when I get it figured out.

A Code 34 is for MAF sensor in a car with a MAF sensor and is for MAP sensor in a car with a MAP sensor.

Code 34 indicates: ECM has seen low airflow (low voltage) for one second when:
Engine is first started
or
RPM above 600
TPS above 6%. To obtain 6%, the engine has to be running at around 2000 RPM in neutral.

1. A Code 34 may be caused by an engine that exhibits a low, rough, unstable or incorrect idle problem. Disconnect the MAF sensor, if the problem goes away then replace the MAF sensor.

2. This test will determine if the conditions still exist to set a code or if the problem is intermittent.

3. With the MAF sensor disconnected, the ECM should see a high signal voltage and set a Code 33. If a Code 34 resets, then the wiring or the ECM is at fault.

I'm going to add that information to the list we have here. Thanks.

I actually took the info out of a shop manual for a 84-89 350 TPI 350 Corvette since they had MAF sensors during that time span. Since GM vehicles share a lot of the same info.

Here'* the site. http://www.batee.com/corvette/codes/index.htm

I tested all the coils; tested fine. So,I'm thinkin EGR.....couldn't find one of them either. I was talking with a couple of friends at NYE party, and we all concluded that the Catalytic Converter is at fault. What are your thoughts on this? Would a clogged converter throw a MAF sensor error?